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/*********************************************************************************
NixNote - An open-source client for the Evernote service.
Copyright (C) 2013 Randy Baumgarte
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
***********************************************************************************/
#include "thumbnailer.h"
#include <QtWebKit>
#include <QWebPage>
#include <QWebFrame>
#include <QtSql>
#include <QTextDocument>
#include "global.h"
#include "sql/notetable.h"
extern Global global;
/* Generic constructor. */
Thumbnailer::Thumbnailer(DatabaseConnection *db)
{
this->db = db;
page = new QWebPage();
connect(page, SIGNAL(loadFinished(bool)), this, SLOT(pageReady(bool)));
idle = true;
connect(&timer, SIGNAL(timeout()), this, SLOT(generateNextThumbnail()));
}
Thumbnailer::~Thumbnailer() {
delete page;
}
void Thumbnailer::render(qint32 lid) {
idle = false;
this->lid = lid;
NoteFormatter formatter;
formatter.thumbnail = true;
NoteTable noteTable(db);
Note n;
noteTable.get(n,lid,false, false);
formatter.setNote(n,false);
QByteArray formattedContent = formatter.rebuildNoteHTML();
// Windows check for font bug when viewing Unicode characters
#ifdef _WIN32
for(int i = 0; i < formattedContent.size(); ++i) {
char c = formattedContent.at(i);
QChar cc(c);
if(cc.unicode() > 127) {
c = ' ';
formattedContent.replace(c,' ');
}
}
#endif
page->mainFrame()->setContent(formattedContent);
}
void Thumbnailer::startTimer() {
timer.stop();
timer.start(global.minimumThumbnailInterval*1000);
}
void Thumbnailer::pageReady(bool ok) {
if (ok) {
capturePage(page);
}
NoteTable ntable(db);
ntable.setThumbnailNeeded(lid, false);
idle = true;
}
void Thumbnailer::capturePage(QWebPage *page) {
page->mainFrame()->setZoomFactor(3);
page->setViewportSize(QSize(300,300));
page->mainFrame()->setScrollBarPolicy(Qt::Horizontal, Qt::ScrollBarAlwaysOff);
page->mainFrame()->setScrollBarPolicy(Qt::Vertical, Qt::ScrollBarAlwaysOff);
QImage pix(QSize(300,300), QImage::Format_ARGB32);
QPainter painter;
painter.begin(&pix);
page->mainFrame()->render(&painter);
painter.end();
QString filename = global.fileManager.getThumbnailDirPath()+QString::number(lid) +".png";
pix.save(filename);
NoteTable ntable(db);
ntable.setThumbnail(lid, filename);
}
void Thumbnailer::generateNextThumbnail() {
// If we are connected we are downloading or uploading or
// if we have thumbnails disabled, so
// we don't want to do this now.
if (global.connected || global.disableThumbnails) {
timer.start(global.maximumThumbnailInterval*1000);
return;
}
timer.stop();
NoteTable noteTable(db);
int i=0;
for (; i<global.batchThumbnailCount; i++) {
QDateTime current;
QDateTime deadlineTime;
deadlineTime.addSecs(20);
// Make sure we haven't been looping too long.
if (current > deadlineTime) {
QLOG_DEBUG() << "Thumbnail timer exceeded. Going to seep";
timer.start(global.maximumThumbnailInterval*1000);
return;
}
if (this->idle) {
i++;
qint32 lid = noteTable.getNextThumbnailNeeded();
if (lid>0) {
render(lid);
} else {
timer.start(global.maximumThumbnailInterval*1000);
return;
}
}
}
timer.start(global.minimumThumbnailInterval*1000);
}
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